This game (like a few others) was only played in Leslie Crowther's UK version. This was a varation of the Clock Game, in fact it was played the same as the Clock Game but with several differences: there are three prizes in the game, the home audience was not shown the price and the clock does not stop in between prizes.
Just like in Clock Game, the contestant gave a price he/she thought was what the prize was worth, then host Crowther told the contestant if the actual price was higher or lower than his/her guess, then he/she must guess again. Guessing the correct price won the prize and simply moved on to the next prize with the clock still going. If the contestant can guess all three prices in under 30 seconds, he/she won the game and all three prizes.